Nut-lock washer



E. c. R OSENCRANZ.

- NUT LOCK WASHER.

- APPLICATION FILED DEC. 15. 19W- Patented July 22, 1919.

7 n nm nnnn um I I INVENTOR Elna/61,5986;

' WITNESSES UNITED STATES PATENT OFFICE.

EMIL C. ROSENCRANZ, OF EVANSVILLE, INDIANA, ASSIGNOR OF ONE-THIRD TO WILLIAM H. RUMPF, 0F EVANSVILLE, INDIANA.

NUT-LOCK VVASLIFIECRI.

Specification of letters Patent.

Patented July 22, 1919.

Application filed December 15, 1917. Serial No. 207,315.

To all whom it may concern:

useful Nut-Lock Washer, of which the following is a specification.

The invention relates to a nut lock and more particularly to the class of nut lock washers for use in securing handles, knobs or the like to dressers, chiffonniers, stand drawers or other articles of furniture.

- The primary object of the invention is the provision of a nut lock of this character, wherein the nut or nuts employed for securing a handle or knob to the wood structure of an article of furniture will be-firmly held against working loose, so that there is no possibility of the handle or knob becoming accidentally detached or removed.

A further object of the invention is the provision of a nut lock of this character which is extremely simple in construction, readily and easily applied, strong, durable, yet light in weight, and inexpensive in manufacture.

With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts, as will be. hereinafter fully described,

illustrated in the accompanying drawing,

and pointed out in the claim hereunto appended.

In the accompanying drawing:

Figure 1 is a fragmentary sectional view through the wood section showing a drawer handle of conventional form applied with the nut locks constructed in accordance with the invention in securing position for the nuts Fig. 2 is a fragmentary perspective view showing one of the nut locks in position for embracing the nut and the other nut lock open prior to its embracing the nut;

Fig. 3 is an enlarged sectional view through the nut lock;

Fig. 4 is a view similar to Fig. 3, the section being taken at substantially right angles thereto;

Fig. 5 is a plan view of the nut lock engaging a nut;

Fig. 6 is a plan view of the nut lock prior to its engagement with the nut;

Fig. 7 is an edge elevation of the nut lock;

Fig. 8 is a perspective view of the nut the blank combine with lock looking toward its side adapted to be fixed to the face of the wood.

Similar reference characters indicate corresponding parts throughout the several views in the drawing.

Referring to the drawing in detail, A designates a piece of wood, B a bail constituting a handle which is swingingly pivoted in the eyesC of bolts D which are passed through the wood A, and carry the adjustable nuts E for the fastening of the bolts.

. The handle B is one of a number of conventional forms of handles for articles of furniture and this form is merely shown for the purpose of illustrating the application of the nut lock washer hereinafter fully described.

The nut lock washer comprises a body 10 preferably made from a rectangular blank of relatively thin sheet metal, for example, scrap galvanized iron or tin, although it may be made from any other thin material having therequired rigidity but susceptible of being bent, and contains centrally thereof a hole or aperture 11 for receiving the bolt ,D. The blank has a greater length than width, the opposite side edges being straight, and the upper and lower edges being straight from the side edges inwardly to points where the two sides of a nut will come when placed upon the bolt. At these points, the upper and lower edges are extended outwardly beyond the other two sides of the nut, as indicated at 12, and said extensions are rounded at their ends where they join with said straight portions. The straight side edges of the straight upper and lower edges thereof to form bendable tongues 13, the main portions of which are flat while their outer edges are bent outwardly to form lips 14, which are placed in a position to be engaged by a suitable tool for manually bending the tongues about the side-faces of the nut, said tongues bending from points where the curved endsof said extension 12 merge into the straight upper and lower edges of the blank.

Formed from the body 10 at points on diametrically opposite sides relative to the hole or aperture 11 so as to be in a position to receive direct pressure from the nut are hollow bur-like projections 15 which are preferably produced by the use of a punch driven through the body 10 so that each projection will be circular in contour and the metal displaced by the punch will provide on said projections a plurality of burs or a ragged tooth edge, thereby assuring a firm biting engagement I of, the projections in the wood when forced thereint on the Working of the nut inwardly upon the bolt D against the body 10 of the nut look, as i is clearly illustrated in Figs. 1 and 4 of,

the drawing. The projections l liwiththe raggededges or burs and the shortness of the same are reinforoed -by the solid portion of the circular projection so as to give maximum strength to the latter for penetration in the W006. A without bending the teeth or burs and also assuring the positive holding of the nut lock securely after the nut has been drawn as tight as possible upon the boltagainst the body 10 of said nut look. When the nut E has been worked home upon the bolt D and the projections 15 have penetrated their full depth into the wood A, a suitable tool, for example, the pliers hereinbefore mentioned are engaged with the lips 14 of the tongues 13 to bend the same outwardly and inwardly against opposite sides of thenut E as shown inFigs. 1, '2, 3 and 5 of the drawing, so that the nut will be securely locked against turning action upon the bolt D, While the engagement of the projections 15 of the body 10 of the nut lock in the Wood A will prevent the turning of the nut look.

The body 10 within the arc of the marginal rounded edges 12 thereof constitutes a Working bed for the nut or a turntable therefor, so that the nut when threaded upon the bolt will aotdirectly upon the body 10 on the inward movementof the nut to positively drive the projections '15 into the Wood for the firm fastening of the nut lock Washer thereto.

The thin gage metal from Which the blank and lower edges being straightfrom the side V edges inwardly to pointswhere the .two sides ofthe nut will come, saidupper and'lower edges being extended; outwardly 'atsaid points beyond-the other two sides of the nut and having the said extensions rounded'at their ends where they join with said straight portions, projections, formedin the blank by a punch sothat'each projection willpresent a plurality ofburs to engage a Wood sur face,said projections being provided at points between the boltaperture and said extensions soasto be in. a position to receive direct pressure from the ll ll-li ihq straight sideedges, of the blank combining with the are flat, their outer or side edges being bent outwardly to form lips whereby they are, in a position to be engagedby a suitabletool for manually bending the tongues about the side it' aces'of the nut, said tongues bending from points where the curved ends of the extension merge into the straightupper and lower edges of the. blank.

In testimony that IfclainI, the foregoing as my own, I have hereto aflixed'my signa' ture in the presence of two witnesses,

EMIL C. ROSENORANZ;

Witnesses:

's-TUB AN, 1 J

B QI ME Copies of this patent may be obtained for, five cents each, by addressing the Commissioner of Patents i Washington, D. G.

straight upper and lower edges to form bendable tongues the main portions of which 

